CN204347001U - A kind of gas density analyzer calibration equipment - Google Patents
A kind of gas density analyzer calibration equipment Download PDFInfo
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- CN204347001U CN204347001U CN201420856054.3U CN201420856054U CN204347001U CN 204347001 U CN204347001 U CN 204347001U CN 201420856054 U CN201420856054 U CN 201420856054U CN 204347001 U CN204347001 U CN 204347001U
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- gas density
- density analyzer
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Abstract
The utility model discloses a kind of gas density analyzer calibration equipment, comprise housing, be provided with for verifying the dense pressure check part of high negative pressure gas density analyzer in housing, dense pressure check part comprises the flowmeter be connected in series successively by pipeline, stop valve, tensimeter, and by the gas density analyzer air-path interface in gas density analyzer access conduit, the air intake opening of air-path interface is connected with manometric outlet, the gas outlet place of air-path interface is connected with two by pipeline and is arranged in parallel, end shares the branch road of an exhausr port, wherein a branch road is provided with pressure-regulating valve, another branch road is connected with stop valve and vacuum pump in turn, pressure-regulating valve and vacuum delivery side of pump are connected to described exhausr port.The utility model improves the verification efficiency to gas density analyzer, simplifies the checking procedure to it.
Description
Technical field
The utility model relates to mining detecting instrument field, particularly a kind of gas density analyzer calibration equipment.
Background technology
The standard of each large Coalmine Safety personnel of pipeline gas density analyzer current Yi Shi China is equipped with, it, with easy to carry, easy to use and dark in the liking of Coalmine Safety personnel, has become Coalmine Safety personnel carry out gas concentration monitoring standard configuration to gas drainage pipeline.But because the pressure in mine gas drainage pipeline is all generally that (normal atmosphere (An) is generally about 100kPa at high negative pressure 30 about kPa ~ 70kPa, subatmospheric is that negative pressure is at this moment known in art technology field), so in the factory inspection of gas density analyzer, user's cycle recheck, all need to create a high negative pressure environment far below normal atmosphere (An), and carry out the detection of standard device in Gas sample in the environment, to ensure gas density analyzer measuring accuracy in actual use.
In prior art, need in gas density analyzer calibration equipment by multiple instrument and meter and parts gas density analyzer being accessed this device, it is various to there is tester instrument in such detection check device, and step is complicated, the problem of inefficiency.
Utility model content
The purpose of this utility model is to provide a kind of gas density analyzer calibration equipment, to realize the verification to gas density analyzer, thus improves gas density analyzer verification efficiency, simplifies the checking procedure to it.
To achieve these goals, the utility model adopts following technical scheme:
A kind of gas density analyzer calibration equipment, comprise housing, be provided with for verifying the dense pressure check part of high negative pressure gas density analyzer in housing, described dense pressure check part comprises the flowmeter be connected in series successively by pipeline, stop valve, tensimeter, and by the described ducted gas density analyzer air-path interface of gas density analyzer access, the air intake opening of described air-path interface is connected with manometric outlet, the gas outlet place of described air-path interface is connected with two by pipeline and is arranged in parallel, end shares the branch road of an exhausr port, wherein a branch road is provided with pressure-regulating valve, another branch road is connected with stop valve and vacuum pump in turn, pressure-regulating valve and vacuum delivery side of pump are connected to described exhausr port.
The pipeline be connected between described air-path interface with described parallel branch is provided with pressure buffer device, and described pressure buffer device is pressure buffer cavity.
Described vacuum pump is anti-explosion vacuum pump.
Because gas density analyzer calibration equipment of the present utility model has the flowmeter be connected in series successively by pipeline, stop valve, tensimeter, and by the gas density analyzer air-path interface in gas density analyzer access conduit, the air intake opening of air-path interface is connected with manometric outlet, the gas outlet place of air-path interface draws two and is arranged in parallel, end shares the branch road of an exhausr port, wherein a branch road is provided with pressure-regulating valve, another branch road is connected with stop valve and vacuum pump in turn, pressure-regulating valve and vacuum delivery side of pump are connected to described exhausr port, therefore the working environment of gas density analyzer is simulated by this device, thus can verify the verification of gas density analyzer, eliminate instrument too much in checking procedure and relevant apparatus, thus the verification efficiency that improve gas density analyzer, simplify the checking procedure to it.
Accompanying drawing explanation
Fig. 1 is the high negative pressure gas density analyzer calibration equipment schematic diagram in embodiment of the present utility model.
Embodiment
Embodiment of the present utility model, as shown in Figure 1: comprise housing, the dense pressure check part for verifying gas density analyzer is provided with in housing, dense pressure check part comprises the flowmeter 1 be connected in series successively by pipeline, stop valve 2, tensimeter 3, and air-path interface 4, gas density analyzer can be accessed in corresponding pipeline at air-path interface 4 place, the air intake opening of air-path interface 4 is connected with manometric outlet, gas outlet place that gas circuit connects 4 is connected with two by pipeline and is arranged in parallel, end shares the branch road of an exhausr port, exhausr port can connect tracheae by the gas configuration outside atmosphere in verification, wherein a branch road is provided with pressure-regulating valve 6, another branch road is connected with stop valve 7 and vacuum pump 8 in turn, the exhausr port 9 that pressure-regulating valve and vacuum delivery side of pump are connected to.In the present embodiment, be provided with pressure buffer device between air-path interface and two parallel branches, this pressure buffer device is pressure buffer cavity 5, and vacuum pump is special anti-explosion vacuum pump.
For ease of operation, the docking port of air-path interface above-mentioned in the present embodiment, exhausr port, air intake opening, pipeline flowmeter and the control end of each valve, the reading section respectively shown, control panel and display screen are all located at surface of shell or outside.
Before device is started working, first need the gas circuit sealing checking this device, so as not to due to gas circuit poorly sealed, cause inflammable and explosive methane gas to leak in air, cause danger.
Inspection method is as follows:
1. the air-path interface of gas density analyzer is connected with the spare interface in device;
2. stop valve 2 is transferred to cut-off state, on-state parameters is transferred to by stop valve 7;
3. closed condition is transferred to by pressure-regulating valve 6;
4. connect the power supply of anti-explosion vacuum pump, anti-explosion vacuum pump is started working, and when tensimeter arrives absolute pressure value 20kPa, cut off vacuum-pump power supply, and close stop valve 7.
5. the pressure hold state of about absolute pressure 20kPa is now in gas channel.Observe manometric reading, in one minute, reading rises and is not more than 3kPa, then think gas channel gas circuit good seal.
6. pressure-regulating valve 6 is slowly opened, the negative pressure pressure in discharge conduit.
When formally verifying gas density analyzer, first connected by the air intake opening of standard gas gas cylinder and this device, then stop valve 2,7 is transferred to conducting state entirely, closed condition is transferred to by pressure-regulating valve; Open standard gas gas cylinder switch, connect anti-explosion vacuum pump power switch, the standard device in Gas of desired concn is led in the gas path pipe shown in Fig. 1, flowmeter is adjusted to about 300ml/min simultaneously; Observe tensimeter, when manometric indicating value reaches required indicating value (generally doing the test calibration of 20kPa, 50kPa, 80kPa tri-points), close the power switch of stop valve 2, stop valve 7 and anti-explosion vacuum pump 8.Regulate pressure-regulating valve 6, make the force value that tensimeter reaches required, now can start to demarcate or inspection the gas density that gas density analyzer carries out under negative pressure.Complete to gas density analyzer calibration check, open pressure-regulating valve 6, slow releasing pressure.
In other embodiments of the present utility model, pressure-regulating valve can adopt integral structure with band flowmeter; Snubber assembly can also be gas buffer tank.
Claims (3)
1. a gas density analyzer calibration equipment, comprise housing, be provided with for verifying the dense pressure check part of high negative pressure gas density analyzer in housing, it is characterized in that: described dense pressure check part comprises the flowmeter be connected in series successively by pipeline, stop valve, tensimeter, and by the described ducted gas density analyzer air-path interface of gas density analyzer access, the air intake opening of described air-path interface is connected with manometric outlet, the gas outlet place of described air-path interface is connected with two by pipeline and is arranged in parallel, end shares the branch road of an exhausr port, wherein a branch road is provided with pressure-regulating valve, another branch road is connected with stop valve and vacuum pump in turn, pressure-regulating valve and vacuum delivery side of pump are connected to described exhausr port.
2. gas density analyzer calibration equipment according to claim 1, is characterized in that: the pipeline be connected between described air-path interface with described parallel branch is provided with pressure buffer device, and described pressure buffer device is pressure buffer cavity.
3. gas density analyzer calibration equipment according to claim 1 and 2, is characterized in that: described vacuum pump is anti-explosion vacuum pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420856054.3U CN204347001U (en) | 2014-12-30 | 2014-12-30 | A kind of gas density analyzer calibration equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420856054.3U CN204347001U (en) | 2014-12-30 | 2014-12-30 | A kind of gas density analyzer calibration equipment |
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| Publication Number | Publication Date |
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| CN204347001U true CN204347001U (en) | 2015-05-20 |
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| CN201420856054.3U Active CN204347001U (en) | 2014-12-30 | 2014-12-30 | A kind of gas density analyzer calibration equipment |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109916555A (en) * | 2019-03-12 | 2019-06-21 | 中国矿业大学 | A kind of calibrating installation of electromagnetic wave gas pressure detector |
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2014
- 2014-12-30 CN CN201420856054.3U patent/CN204347001U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109916555A (en) * | 2019-03-12 | 2019-06-21 | 中国矿业大学 | A kind of calibrating installation of electromagnetic wave gas pressure detector |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 450001 Henan city of Zhengzhou province high tech Industrial Development Zone Long Chun Road No. 10 Patentee after: Power Polytron Technologies Inc Address before: 450001 Henan city of Zhengzhou province high tech Industrial Development Zone Long Chun Road No. 10 Patentee before: Zhengzhou GL Tech Company |
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| CP01 | Change in the name or title of a patent holder |